HD6432670 Hitachi, HD6432670 Datasheet - Page 68

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Note: Normal mode is not available in this LSI.
2.1.1
The differences between the H8S/2600 CPU and the H8S/2000 CPU are as shown below.
Instruction
MULXU
MULXS
In addition, there are differences in address space, CCR and EXR register functions, power-down
modes, etc., depending on the model.
2.1.2
In comparison to the H8/300 CPU, the H8S/2600 CPU has the following enhancements.
Rev. 2.0, 04/02, page 22 of 906
Two CPU operating modes
Normal mode*
Advanced mode
Power-down state
Transition to power-down state by SLEEP instruction
CPU clock speed selection
Register configuration
The MAC register is supported only by the H8S/2600 CPU.
Basic instructions
The four instructions MAC, CLRMAC, LDMAC, and STMAC are supported only by the
H8S/2600 CPU.
The number of execution states of the MULXU and MULXS instructions
More general registers and control registers
Eight 16-bit expanded registers, and one 8-bit and two 32-bit control registers, have been
added.
Expanded address space
Normal mode supports the same 64-kbyte address space as the H8/300 CPU.
Advanced mode supports a maximum 16-Mbyte address space.
Differences between H8S/2600 CPU and H8S/2000 CPU
Differences from H8/300 CPU
Mnemonic
MULXU.B Rs, Rd
MULXU.W Rs, ERd
MULXS.B Rs, Rd
MULXS.W Rs, ERd
Execution States
H8S/2600
3
4
5
4
H8S/2000
12
13
21
20